(19)
(11) EP 2 605 266 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
30.12.2015 Bulletin 2015/53

(43) Date of publication A2:
19.06.2013 Bulletin 2013/25

(21) Application number: 12197283.0

(22) Date of filing: 14.12.2012
(51) International Patent Classification (IPC): 
H01J 37/06(2006.01)
 H01J 3/02(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 16.12.2011 IT TO20111161

(71) Applicant: Consiglio Nazionale delle Ricerche
00185 Roma (IT)

(72) Inventors:
  • Grillo, Vincenzo
    42043 Localita' Gattatico (Reggio Emilia) (IT)
  • Marrucci, Lorenzo
    80122 Napoli (IT)
  • Karimi, Ebrahim
    Ottawa K1R7S7 (CA)
  • Santamato, Enrico
    80127 Napoli (IT)

(74) Representative: Vanzini, Christian et al
Jacobacci & Partners S.p.A. Corso Emilia 8
10152 Torino
10152 Torino (IT)

   


(54) Converter of orbital momentum into spin momentum for the polarization of particle beams


(57) Apparatus for spin polarizing a particle beam, which is adapted to process an input particle beam (Bi) in such a way as to generate an at least partially spin polarized output particle beam (Bo), and comprises:
- a vortex beam generator (1) for imparting orbital angular momentum to the input particle beam;
- an electromagnetic field generator (5) for generating a transverse magnetic field, space-variant and symmetric with respect to the (z) axis of the input particle beam, in such a way as to change the spin of the particles and attach thereto a plurality of different values of orbital angular momentum in dependence on their input spin values; and
- a beam component separating group (7, 9) for spatially separating the particles in dependence on their orbital angular momentum values, in such a way as to obtain the at least partially spin polarized output particle beam.







Search report















Search report